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� Sequoia San Carlos <br /> Industrial Road <br /> los GA 94070-4111 <br /> ' Analytical (650)232-9600� Ci FAX(650) 232-9612 <br /> i <br /> ' Sequoia-Morgan Hill Project I Sampled 7/19/99 <br /> 885 Jarvis Drive Project Number M907712(Ground Zero) Received 7/21/99 <br /> Morgan Hill,CA 95037 Project Manager Wendy Reported 8/2/99 <br /> Total Purgeable Hydrocarbons(C6-C12)and l3TEX by DHS LUFT/QuaEtty Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> LCS continued 9070104-BSI <br /> Ethylbenzene 7/22/99 100 838 ug/l 700-130 83 8 <br /> Xylenes(total) 300 260 700-130 867 <br /> Surrogate a,a,a-Tn luorotoluene 100 101 600-140 101 <br /> tMatrix Spike 9070104-MS1 L90719I-03 <br /> Benzene 7/22/99 100 ND 8 19 ug/I 600-140 819 <br /> ' Toluene 100 ND 820 600-140 820 <br /> E,thylbenzene 100 ND 806 600-140 806 <br /> Xylenes(total) 300 ND 248 600-140 827 <br /> Surrogate a a a-Triuorotoluene 100 960 600-140 960 <br /> ' Matrix Spike Dup 9070104-MSD1 L907191-03 <br /> Benzene 7122/99 100 ND 847 ug/I 600-140 84 7 25 0 3.36 <br /> oluene 100 ND 852 60 0-]40 852 250 3 83 <br /> iylbenzene 10 0 ND $3$ " 60 0-140 83 8 25 0 3 89 <br /> y[enes{total) 30 0 ND 25 8 60 0-140 86 0 25 0 3 91 <br /> Surrogate a,a a-Truorotoluene 10 0 9 08 60 0-140 90 8 <br /> i <br /> 1 <br /> 1 I <br /> i <br /> uoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> ' Page 5 of 6 <br />